And iiopedale



(No Model.)

P. .M YT BS NK 0m OH MC .R Tm C I P Patented July 20, 1897.

UNTTnn STATES PATENT Trice.

NORTHROP LOOM COMPANY, OF SACO, MAINE,

SACIISEITS.

AND IIOIEDALE, MAS- PICKER CHECK-STRAP.

SPECIFICATION forming part of Letters Patent No. 586,796, dated July 20, 1897. Application led January 6, 1897. Serial No. 618,113. (No model.)

T0 ftZZ wtom/ may concern:

Be it known that I, TIMOTHY MooNEY, of Fall River, county of Bristol, State of Massachusetts, have invented an Improvement in Picker Check-Straps, of which the following description, in connection with the accom panying drawings, is a specification, like letters and ligures on the drawings representing like parts.

In United States Patent No. 569,880, granted to me, I have shown means for checking the shuttle gradually and with elasticity as it enters the shuttlebox, said mea-ns consistw ing of a loop-like strap within which the picker-stick swings, a lug on the strap engaging a stop on the lay to prevent further outward movement of the strap just before the picker-stick reaches the outer end of the slot in the lay.

In my present invention I make use of a single strap for both picker-sticks, and I have provided means for adjusting the tension of the check-strap in a simple and effect-ive manner so that the picker-stick may be stopped at j ust the proper point and prevent displace ment of the shuttle.

By my invention the attendant is enabled to see at a glance whether the shuttle is running properly or not, and the adjustment and correction are made with great ease.

Figure l, in front elevation and centrally broken out, represents the lay of a loom with my invention applied thereto. Fig. 2 is a plan View thereof, also centrally broken out. Fig. 3 is an enlarged perspective View of the tension-controller, and Fig. a is a perspective detail of a part of the controller-stand.

The lay A, slotted at a in usual manner for the picker-sticks P, their actuating devices, (not shown,) and the shuttle-box binders B B are and may be of usual construction in looms, and I have herein shown a check-strap C as secured at its ends to the lay back of the shuttle-boxes, passing around outside of the picker-sticks and along the front of the lay through guide-loops 20.

At the under side of the lay and near its center, as herein shown, is secured a stand BX, havin g ears 5, through which and into the lay suitable screws 7 pass, a third outwardlyextended ear l) projecting in front of the lay.

The earl) is notched or slotted at b, and the stand BX is provided with upturned guides b2, preferably rounded at their inner sides, as best shown in Fig. 3, and adapted to rest against the front of the lay.

A headed stud h3, having a roll 11X thereon, of wood or other suitable material, is threaded at its lower end and extended through the slot or notch lf and held securely in place by a check-nut n, a washer n* being preferably interposed between the nut and under side of the ear l).

The roll 12X is held in parallelism with the guides b2 of the stand BX and with its inner periphery set more or less within the plane of said ends, according to the adjustment of the stud in the ear l).

The check-strap passes over the guides bi the looped ends of the strap, the latter moves longitudinally back and forth, regulated by the tension device.

A suitable lug or stop CX, preferably a block of leather, is fastened to the outer face of the strap C, between one of the guides b2, which also forms a stop, and a second upturned stud or stop b5 on the stand BX, the opposite reeiprocations of the said strap bringing the lug 0X into engagement with one or other of said stops, the furthermovement of the looped strap being stopped and the picker-stick arrested. A short upturn ed stud b (best shown in Fig. 3) in front of the stop b5 serves to guide the strap between them.

I adjust the tensioirroll hX so that when the shuttle engages the pickenstiek at the right hand, Figs. l and 2, the momentum will be checked gradually, and when the lug CX engages the stop lf further movement of strap and stick is checked just before the stick engages the outer end of its slot a. The stop b2 will cooperate with the lug cX on the opposite throw of the shuttle and the latter will be brought to a stop graduallyin the shuttlebox, eliminating the chance of rebound.

IOO

If the shuttle is not running properly, the lug CX will not bring up against the stops b2 b5, and the attendant by noting the movement of the lug can thus know whether the shuttle is operating properly.

My invention is adapted to looms wherein the lay or the shuttle-stroke varies in length, it being obvious that the shorter the stroke of the shuttle the greater the force with which it will enter the shuttle-box, the blow of the picker-stick being constant, and for a longer stroke the force of the shuttle at the end of its stroke will be dilninished.

When the stroke is long, I decrease the tension on the strap by moving the roll 13X out- Ward, but when the stroke is short I moveV the roll inward, thus increasing the friction on the check-strap and acting to take up the greater force of impact of the shuttle upon the picker-sticks.

By the use of my invention the shuttle-box binders may be adjusted to permit the shuttle to enter freely, yet with suflicient friction to be retained in place, so that wear on the shuttle and binders is decreased.

The length of the strap is such that neither picker-stick can strike the end of the slot d on its outward throw, the stick striking the inside of the strap and avoiding shock.

Having fully described my iuvention,wliat I claim, and desire to secure by Letters Patent, is-

l. In a loom, a picker check-strap, and a tension device therefor, including guides over which the strap moves, and adjustable means intermediate said guides to bear upon and depress the strap thereat, substantially as described.

2. A tension device for picker check-straps, comprising guides over which the strap passes, a roll to bear upon the opposite side of the strap between the guides,and means to change the relative position of said guides and roll, to Vary the bend in and the friction upon the strap effected thereby, substantially as described.

3. In aloom, the lay, a check-strap attached at its ends thereto andformingloops, pickersticks movable in the loops, and a lug on the strap, combined with a stand mounted on the lay and provided with guides over which the strap moves, a roll to bear on the opposite side of the strap between the guides, means to adjust said roll toward and from the strap, and a stop to engage the lug when the strap is moved in one direction, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

TIMOTHY MOONEY. l lVitnesses:

JAMES N. BUFFINTON, F. M. HUNTER. 

